Www virtual library irrigation & hydrology , an information service since 1995 描述:灌溉与水文学虚拟图书馆创建于1995年，是一种信息服务系统。
But it may cost you nothing to create a “ virtual libary ” on your computer 如果一个人在虚拟的计算机世界，可能不用花费一分钱就可以建立一个“虚拟图书馆” 。
Be capable of links to : urban groundwater database ， usgs water resources information & www virtual library ? environment 可以联接到城市地下水数据库， usgs水资源数据和全球信息网虚拟图书馆-环境等。
The internet is like an electronic city with virtual libraries , storefronts , business offices , art galleries , and so on Internet就象一个有虚拟图书馆、商店、商业办公室、艺术画廊以及其他许多事物的电子城。
Abstract : the characteristics and performance of the simulated library are discussed , as well as the relationship with the traditional library 文摘:论述了虚拟图书馆的特点与功能，并探讨其与传统图书馆之间的关系。
The digital library is based on the computer and the network technology , it displays the whole function of traditional library in digitization , which is looked upon virtual library and the talk man of real library on the web 而数字图书馆是基于计算机和网络技术而存在的图书馆,它将传统图书馆所具备的职能以数字化的形式表现出来,是建立在网络上的虚拟图书馆,是实体图书馆在网络上的代言人。
Disciplines navigation system for network resources of university libraries is based on the developed network establishment , advanced information technology and rich network information resources . it is deep - seated development and research products of college libraries " modern information and subjects consultation services . to the whole macro network information system , disciplines navigation can improve the degree of order of network information 通过对港台地区40多所高校图书馆网络学术资源组织情况及国外虚拟图书馆的优秀典范如：加州大学河滨分校图书馆信息矿藏、图书馆员因特网索引的调研，认为国内以清华大学为代表的高校图书馆学科导航库建设水平略高于港台地区，但就网络学科导航系统的整体建设水平而言，我们还处于起步阶段，国外优秀典范的先进技术和方法为今后国内网络学科导航建设提供了可借鉴的经验。
